Pipel: Exploiting Resource Reorganization to Optimize Performance of Pipeline-Structured Applications in the Cloud

Workflow has become a standard for many scientific applications that are characterized by a collection of processing elements and an arbitrary communication among them. In particular, a pipeline application is a type of workflow that receives a set of tasks, which must pass through all processing elements (also named here as stages) in a linear [...]

Nuoxus: A proactive caching model to manage multimedia content distribution on fog radio access networks

One of the most recently proposed 5G architectures, Fog Radio Access Network or F-RAN, has the same cloud computing-based approach of C-RANs while giving additional storage and processing power to the edge nodes so that they can address network activities. The main problem of F-RANs is the intense data traffic in the fronthaul, which is [...]

A half-century of Baarda’s concept of reliability: a review, new perspectives, and applications

Over the 50 years of its existence, Baarda’s concept of reliability has been used as a standard practice for the quality control in geodesy and surveying. In this study, we analysed the pioneering work of Baarda (Publ Geod New Ser 2(4) 1967; Publ Geod New Ser 2(5) 1968) and recent studies on the subject. We [...]

An Anesthesia Alert System based on Dynamic Profiles Inferred through the Medical History of Patients

Anesthesia Information Management Systems (AIMSs) have existed for many decades. However, how to turn patient records into strategic information to improve the anesthesia process is still a research challenge. We did not find systems that use data from previous procedures for issuing alerts. This data can prevent errors during procedures and aid on medical staff [...]

Integration of feature models: A systematic mapping study

Context The integration of feature models has been widely investigated in the last decades, given its pivotal role for supporting the evolution of software product lines. Unfortunately, academia and industry have overlooked the production of a thematic analysis of the current literature. Hence, a thorough understanding of the state-of-the-art works remains still limited. Objective This [...]

Ebenezer: um modelo para prevenção ubíqua de acidentes de trabalho

Neste artigo é proposto Ebenezer, um modelo de computação ubíqua para prevenir acidentes em um ambiente de trabalho inteligente. Sua principal característica é a notificação aos trabalhadores e aos usuários em geral sobre a presença de perigos nos arredores, para evitar riscos de acidentes. A aplicação e validação foram realizadas com os trabalhadores em [...]

Diagnosis of learner dropout based on learning styles for online distance learning

The amount of data generated by computer systems in Online Distance Learning (ODL) contains rich information. One example of this information we define as the Learner Learning Trail (LLT), which is the sequence of interactions between the students and the virtual environment. Another example is the Learner Learning Style (LLS), which is associated with the [...]

TrailCare: An indoor and outdoor Context-aware system to assist wheelchair users

This article proposes a computational system to assist wheelchair users, improving accessibility through ubiquitous computing technologies. TrailCare uses indoor and outdoor location information to assist wheelchair users, recording their trails and providing context-aware assistance. Trails are historical records of users’ displacements that can be used to develop strategic accessibility solutions, such as security management and [...]

SIGTE: A System for Management of Waiting Time in Hospital Emergencies

This article proposes an integrated system for management of waiting times in hospital emergencies, called SIGTE. The system minimizes the waiting time of patients in the hospital emergency queues of the Sistema Único de Saúde (SUS), balancing the demands of care and mitigating problems of overcrowding. The SUS guarantees the population free access to health [...]

Gamification and serious games in depression care: A systematic mapping study

Depression is a common mental disorder that causes sadness and loss of interest. It affects 350 million people in the world and its most severe state can lead to suicide. Many technologies are being used to aid the depression treatment and gamification has been used as an approach to improve adherence and engagement in the [...]